JPH0864350A - Heater for fixing - Google Patents
Heater for fixingInfo
- Publication number
- JPH0864350A JPH0864350A JP20074794A JP20074794A JPH0864350A JP H0864350 A JPH0864350 A JP H0864350A JP 20074794 A JP20074794 A JP 20074794A JP 20074794 A JP20074794 A JP 20074794A JP H0864350 A JPH0864350 A JP H0864350A
- Authority
- JP
- Japan
- Prior art keywords
- tcr
- heating resistor
- resistor
- fixing heater
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子写真プリンタやフ
ァクシミリ等に搭載する定着装置に関し、特に絶縁基板
上に帯状の発熱抵抗体を形成して成る定着用ヒータに関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device mounted on an electrophotographic printer, a facsimile or the like, and more particularly to a fixing heater having a strip-shaped heating resistor formed on an insulating substrate.
【０００２】[0002]
【従来の技術】特開昭５９−６８７６６号には、感熱記
録ヘッドとして周知の薄膜型サーマルヘッドや厚膜型サ
ーマルヘッドの各仕様を、定着用ヒータに用いて、この
定着用ヒータに加圧ローラを当てるとともに、これらの
間に未定着トナー像を担持した記録紙を搬送し、そし
て、この定着用ヒータでもって、その記録紙を定着する
構成が提案されている。2. Description of the Prior Art In Japanese Patent Laid-Open No. 59-68766, each specification of a thin film type thermal head or a thick film type thermal head known as a thermal recording head is used for a fixing heater and a pressure is applied to the fixing heater. A configuration has been proposed in which a recording paper carrying an unfixed toner image is conveyed between them while a roller is applied, and the recording paper is fixed by this fixing heater.
【０００３】しかしながら、同公報には、サーマルヘッ
ド仕様を、定着用ヒータに用いることが提案されている
が、この定着用ヒータの具体的な構造については何ら記
載されていない。However, although the publication proposes to use the thermal head specification for the fixing heater, it does not describe any specific structure of the fixing heater.
【０００４】また、特開平２−６５０８６号にも、サー
マルヘッド仕様の定着用ヒータが提案されている。すな
わち、図７はこの定着用ヒータ１の横断面図であり、長
さ３００ｍｍ、幅８ｍｍのアルミナセラミックスから成
る細長い平板状基体２の上面に、グレーズ層３を設け、
更にこのグレーズ層３上に細長い電気発熱体４を配し、
この電気発熱体４の表面およびグレーズ層３の表面をガ
ラス質の保護層５を被覆した構成である。Also, Japanese Patent Laid-Open No. 2-65086 proposes a fixing heater with a thermal head specification. That is, FIG. 7 is a cross-sectional view of the fixing heater 1, in which a glaze layer 3 is provided on the upper surface of an elongated flat plate-shaped substrate 2 made of alumina ceramics having a length of 300 mm and a width of 8 mm.
Further, an elongated electric heating element 4 is arranged on the glaze layer 3,
The surface of the electric heating element 4 and the surface of the glaze layer 3 are covered with a vitreous protective layer 5.
【０００５】[0005]
【発明が解決しようとする問題点】上記のように、サー
マルヘッド仕様の定着用ヒータでは、加圧ローラの長手
方向に沿って発熱抵抗体を帯状を設けているので、その
発熱抵抗体の長手方向に均一な温度分布になることが要
求される。As described above, in the fixing heater of the thermal head specification, since the heating resistor is provided in a strip shape along the longitudinal direction of the pressure roller, the length of the heating resistor is long. A uniform temperature distribution in the direction is required.
【０００６】しかしながら、帯状発熱抵抗体の両端部
は、中央部と比べて温度が上昇する傾向にあり、これに
より、その長手方向に加熱ムラが生じ、その結果、記録
紙に対する定着が均一にならずに、画像に濃淡ムラがで
き、その定着ムラにより未定着トナーが除かれて、その
後の記録紙上の画像が十分に形成されなくなり、また、
未定着トナーにより記録紙が汚染されたり、あるいは画
像に滲みが生じていた。However, the temperature tends to rise at both ends of the strip-shaped heating resistor as compared with the central part, which causes heating unevenness in the longitudinal direction, and as a result, if the fixing on the recording paper is uniform. Without causing uneven density, the uneven fixing removes unfixed toner, and the image on the recording paper cannot be formed sufficiently.
The recording paper was contaminated by the unfixed toner, or the image was blurred.
【０００７】本発明は上記事情に鑑みて完成されたもの
であり、その目的は未定着トナー像を有効かつ均一に定
着するようにして、記録紙上に画像を忠実に形成すると
ともに、記録紙が汚染されたり、あるいは画像に滲みが
生じたりしないようにすることにある。The present invention has been completed in view of the above circumstances, and an object of the present invention is to form an image faithfully on a recording paper by fixing an unfixed toner image effectively and uniformly, and This is to prevent contamination or blurring of the image.
【０００８】[0008]
【問題点を解決するための手段】請求項１の定着用ヒー
タは、絶縁基板上にＴＣＲが負である発熱抵抗体を帯状
に形成し、この発熱抵抗体の両端に電極を配設して成る
ことを特徴とする。According to a first aspect of the present invention, there is provided a fixing heater in which a heating resistor having a negative TCR is formed in a strip shape on an insulating substrate, and electrodes are arranged at both ends of the heating resistor. It is characterized by being formed.
【０００９】[0009]
【作用】定着用ヒータの帯状発熱抵抗体全体で均一な発
熱があったとしても、記録紙の両サイド付近は、その中
央部と比べても放熱量が大きく、これにより、発熱抵抗
体の中央部付近は、その両端部と比べて昇温する傾向に
ある。そこで、請求項１の定着用ヒータにおいては、帯
状発熱抵抗体をＴＣＲが負であるような材料でもって形
成している。このＴＣＲとは、抵抗体の温度変化係数
（TemperatureCoefficient of Resistance) の一般的な
呼称であって、その数値〔ＴＣＲ〕は下記の通りであ
り、通常、その単位はＰＰＭである。[Effect] Even if uniform heat is generated in the entire band-shaped heating resistor of the fixing heater, the amount of heat radiation is large near both sides of the recording paper as compared with the central portion thereof. The temperature in the vicinity of the part tends to be higher than that in the both ends. Therefore, in the fixing heater according to the first aspect, the strip-shaped heat generating resistor is formed of a material having a negative TCR. This TCR is a general name for the temperature coefficient of resistance of a resistor, and its numerical value [TCR] is as follows, and its unit is usually PPM.
【００１０】[0010]
【数１】 [Equation 1]
【００１１】ただし、Ｒa ：温度Ｔa での抵抗値 Ｒb ：温度Ｔb での抵抗値 このようなＴＣＲが負である発熱抵抗体の場合には、昇
温すると、これに伴って抵抗値が小さくなる特性があ
り、そのために、発熱抵抗体の中央部付近は、その両端
部と比べて比抵抗が小さくなるので、その発熱度合いを
下げ、発熱抵抗体の両端部との温度差を顕著に小さくで
き、その結果、発熱抵抗体の長手方向に沿って加熱ムラ
が生じなく、均一な温度分布となる。However, R a : resistance value at temperature T a R b : resistance value at temperature T b In the case of such a heating resistor having a negative TCR, when the temperature is raised, the resistance is increased accordingly. There is a characteristic that the value becomes small.Therefore, the specific resistance in the vicinity of the central part of the heating resistor is smaller than that at both ends, so the degree of heat generation is reduced and the temperature difference between both ends of the heating resistor is reduced. The temperature can be remarkably reduced, and as a result, heating unevenness does not occur along the longitudinal direction of the heating resistor, and a uniform temperature distribution is obtained.
【００１２】したがって、未定着トナー像を有効かつ均
一に定着できるので、記録紙上のトナー像を画像に忠実
に再現できるとともに、記録紙が汚染されず、また画像
に滲みが生じなくなる。Therefore, since the unfixed toner image can be effectively and uniformly fixed, the toner image on the recording paper can be reproduced faithfully to the image, the recording paper is not contaminated, and the image does not bleed.
【００１３】[0013]
【実施例】図１は長尺形状の定着装置６の基本的な構成
を示す横断面による概略説明図であり、図２はこの定着
装置６の主要部である定着用ヒータ７の平面図、図３は
図２に示す切断面線Ｘ−Ｘによる横断面図、図４は図２
に示す切断面線Ｙ−Ｙによる縦断面図である。また、図
５は定着用ヒータ７の端部構成を示す拡大縦断面図であ
り、図６は発熱抵抗体の温度分布を示す線図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic cross-sectional view showing the basic structure of a long fixing device 6, and FIG. 2 is a plan view of a fixing heater 7 which is a main part of the fixing device 6. 3 is a cross-sectional view taken along the section line X-X shown in FIG. 2, and FIG.
It is a longitudinal cross-sectional view taken along the section line Y-Y shown in FIG. Further, FIG. 5 is an enlarged vertical sectional view showing an end structure of the fixing heater 7, and FIG. 6 is a diagram showing a temperature distribution of the heating resistor.
【００１４】図１によれば、定着装置６は定着用ヒータ
７と圧接ローラ８とから成り、この定着用ヒータ７は例
えばアルミナやジルコニア等のセラミックスにより作成
した長尺状の絶縁基板９（長手寸法２６０ｍｍ×幅寸法
１０ｍｍ）と、この絶縁基板９の上にその表面平滑性を
高めるために形成したガラスのグレーズ層１０と、更に
このグレーズ層１０上の発熱抵抗体１１とから構成す
る。この発熱抵抗体１１は窒化タンタル、酸化チタン、
酸化ルテニュウム、タングステン等の抵抗体材料により
スパッタリングまたは印刷焼成により設ける。このよう
な構成の定着用ヒータ７上に圧接ローラ８を配置すると
ともに、定着用ヒータ７と圧接ローラ８との間に未定着
トナー像を担持した記録紙１２を搬送するようにしてい
る。この圧接ローラ８は、芯となる円柱状金属体の外周
面にシリコンゴム等により成る柔軟性のエラストマー層
を被着して形成したものである。According to FIG. 1, the fixing device 6 comprises a fixing heater 7 and a pressure contact roller 8. The fixing heater 7 is made of ceramics such as alumina or zirconia. (Size 260 mm × width 10 mm), a glass glaze layer 10 formed on the insulating substrate 9 to enhance its surface smoothness, and a heating resistor 11 on the glaze layer 10. The heating resistor 11 is made of tantalum nitride, titanium oxide,
It is provided by sputtering or printing firing with a resistor material such as ruthenium oxide or tungsten. The pressing roller 8 is arranged on the fixing heater 7 having such a structure, and the recording paper 12 carrying the unfixed toner image is conveyed between the fixing heater 7 and the pressing roller 8. The pressure contact roller 8 is formed by applying a flexible elastomer layer made of silicon rubber or the like to the outer peripheral surface of a cylindrical metal body serving as a core.
【００１５】上記定着用ヒータ７の具体的構成を示す図
２〜図４によれば、この帯状グレーズ層１０は、その両
側端に盛り上がり部１０ａ、１０ｂが相互に平行となる
ように設ける。このグレーズ層１０はスクリーン印刷法
もしくはスプレーでガラスペーストを塗布し、その後に
焼成することにより設け、更に両盛り上がり部１０ａ、
１０ｂの間にある窪み領域に発熱抵抗体１１を帯状（幅
２ｍｍ、厚さ１μｍ）に形成している。また、発熱抵抗
体１１の両端部上には、それぞれアルミニウム、金、銀
等から成る電極部１４をスパタリングおよびフォトリソ
法の組合せにより設け、更にその発熱抵抗体１１を覆う
ようにグレーズ層１０の上に保護膜１３を配している。
この保護膜１３は、窒化珪素、炭化珪素、酸化珪素等か
ら成り、スパッタリングにより設ける。あるいはホウ珪
酸鉛等から成る場合であれば、印刷焼成により設ける。According to FIGS. 2 to 4 showing the specific structure of the fixing heater 7, the strip-shaped glaze layer 10 is provided so that the raised portions 10a and 10b are parallel to each other at both ends thereof. The glaze layer 10 is provided by applying a glass paste by a screen printing method or a spray and then firing it.
The heating resistor 11 is formed in a band shape (width 2 mm, thickness 1 μm) in the recessed region between 10b. Further, electrode portions 14 made of aluminum, gold, silver or the like are provided on both ends of the heating resistor 11 by a combination of sputtering and photolithography, and the glaze layer 10 is further covered so as to cover the heating resistor 11. The protective film 13 is provided on the.
The protective film 13 is made of silicon nitride, silicon carbide, silicon oxide or the like, and is provided by sputtering. Alternatively, if it is made of lead borosilicate or the like, it is provided by printing firing.
【００１６】また、この電極部１４の付近を示す図５に
よれば、保護膜１３を配するに当たって、電極部１４の
一部を被覆せず、その露出領域の上に半田１５を介して
接続ケーブル１６を設ける。Further, according to FIG. 5 showing the vicinity of the electrode portion 14, in disposing the protective film 13, a part of the electrode portion 14 is not covered, but is connected to the exposed region thereof via the solder 15. A cable 16 is provided.
【００１７】上記構成の定着装置６においては、圧接ロ
ーラ８と対応するように盛り上がり部１０ａ、１０ｂを
設けているので、圧接ローラ８が記録紙１２を介して発
熱抵抗体１１を圧接するに当たって、この記録紙１２が
発熱抵抗体１１の発熱面を十分に接触するとともに、そ
の接触面積が大きくなり、これによって発熱抵抗体１１
が幅広く熱伝導し、その熱伝達効率が顕著に向上した。In the fixing device 6 having the above structure, since the raised portions 10a and 10b are provided so as to correspond to the pressure contact roller 8, when the pressure contact roller 8 presses the heating resistor 11 via the recording paper 12, The recording paper 12 makes sufficient contact with the heat generating surface of the heat generating resistor 11 and the contact area becomes large, whereby the heat generating resistor 11
The heat conduction is wide and the heat transfer efficiency is significantly improved.
【００１８】そして、本発明においては、上記発熱抵抗
体１１をＴＣＲが負である材料により形成した。例え
ば、イー・エス・エル日本（株）製のチタン酸バリウム
系の抵抗体材料である商品名ＮＴＣ２４１３（ＴＣＲ＝
−５７００ＰＰＭ／℃）、ＮＴＣ２４１４（ＴＣＲ＝−
７０００ＰＰＭ／℃）がある。In the present invention, the heating resistor 11 is made of a material having a negative TCR. For example, NTC2413 (TCR = TCR =, which is a barium titanate-based resistor material manufactured by ESL Japan Co., Ltd.)
-5700PPM / ° C), NTC2414 (TCR =-
7,000PPM / ° C).
【００１９】本発明者が繰り返し行った実験によれば、
このＴＣＲを、−８０００ＰＰＭ／℃≦ＴＣＲ≦−１０
０ＰＰＭ／℃、好適には−８０００ＰＰＭ／℃≦ＴＣＲ
≦−５００ＰＰＭ／℃にするとよく、この範囲内であれ
ば、定着用ヒータの発熱抵抗体に、均一な温度分布が得
られやすいという点が望ましい。According to the experiments repeated by the inventor,
This TCR is set to −8000 PPM / ° C. ≦ TCR ≦ −10.
0PPM / ° C, preferably -8000PPM / ° C TCR
≦ −500 PPM / ° C. is preferable, and within this range, it is desirable that a uniform temperature distribution can be easily obtained in the heating resistor of the fixing heater.
【００２０】次に、ＴＣＲを３通りの値にして、下記に
（例１）〜（例３）として例示する。 （例１）ＴＣＲが−８０００ＰＰＭ／℃である発熱抵抗
体１１を用いて、その中央付近と両端付近との温度差Δ
Ｔが５０℃になった場合、中央付近の単位長さ当たりの
抵抗値Ｒa と、両端付近の単位長さ当たりの抵抗値Ｒb
との比は、 Ｒa ／Ｒb ＝（ＴＣＲ）×ΔＴ＋１ ＝−８０００×１０-6×５０＋１ ＝−０．４＋１＝０．６ したがって、発熱抵抗体１１の中央付近は、その両端付
近と比べて６０％の消費エネルギとなり、中央付近は発
熱量が減少し、温度が低下傾向にある。Next, the TCR is set to three different values, and examples are given below as (Example 1) to (Example 3). (Example 1) Using the heating resistor 11 having a TCR of -8000 PPM / ° C, the temperature difference Δ between the vicinity of the center and the ends thereof is Δ.
When T becomes 50 ° C., the resistance value R a per unit length near the center and the resistance value R b per unit length near both ends
The ratio of R a / R b = (TCR) × ΔT + 1 = −8000 × 10 −6 × 50 + 1 = −0.4 + 1 = 0.6 Therefore, the vicinity of the center of the heating resistor 11 is As a result, the energy consumption is 60%, the amount of heat generation decreases near the center, and the temperature tends to decrease.
【００２１】（例２）ＴＣＲが−５００ＰＰＭ／℃であ
る発熱抵抗体１１を用いて、その中央付近と両端付近と
の温度差ΔＴが５０℃になった場合では、 Ｒa ／Ｒb ＝−５００×１０-6×５０＋１ ＝０．９７５ したがって、発熱抵抗体１１の中央付近は、その両端付
近と比べて９７．５％の消費エネルギとなり、（例１）
と比べれば、その効果が小さいが、中央付近は発熱量が
減少傾向にある。(Example 2) When the heating resistor 11 having a TCR of -500PPM / ° C is used and the temperature difference ΔT between the center and both ends thereof is 50 ° C, Ra / Rb =- 500 × 10 −6 × 50 + 1 = 0.975 Therefore, the energy consumption in the vicinity of the center of the heating resistor 11 is 97.5% of that in the vicinity of both ends thereof (Example 1).
Although the effect is small compared with, the calorific value tends to decrease near the center.
【００２２】（例３）更にＴＣＲが−１００ＰＰＭ／℃
である発熱抵抗体１１を用いて、その中央付近と両端付
近との温度差ΔＴが５０℃になった場合では、 Ｒa ／Ｒb ＝−１００×１０-6×５０＋１ ＝０．９９５ したがって、発熱抵抗体１１の中央付近は、その両端付
近と比べて９９．５％の消費エネルギとなる。(Example 3) Further, the TCR is -100PPM / ° C.
When the temperature difference ΔT between the center and both ends of the heating resistor 11 is 50 ° C., Ra / Rb = −100 × 10 −6 × 50 + 1 = 0.995 Therefore, Energy consumption in the vicinity of the center of the heating resistor 11 is 99.5% of that in the vicinity of both ends thereof.
【００２３】（実験例）次に上記構成の定着用ヒータ７
において、発熱抵抗体１１を負のＴＣＲである材料（イ
ー・エス・エル日本（株）製のＮＴＣ２４１３）により
形成した場合と、ＴＣＲが正のポリシリコンや酸化チタ
ン等により形成した場合とについて、それぞれ発熱抵抗
体１１のＡ点〜Ｂ点までの間（間隔２３０ｍｍ）での温
度分布を測定したところ、図６に示す通りの結果が得ら
れた。(Experimental Example) Next, the fixing heater 7 having the above structure
In the above, regarding the case where the heating resistor 11 is formed of a material having a negative TCR (NTC2413 manufactured by ESL Japan Co., Ltd.) and the case where the heating resistor 11 is formed of polysilicon or titanium oxide having a positive TCR, When the temperature distribution of each of the heating resistors 11 from point A to point B (distance 230 mm) was measured, the results shown in FIG. 6 were obtained.
【００２４】同図中、横軸は発熱抵抗体１１の長手方向
であり、縦軸は温度であって、（イ）は本発明の温度分
布線であり、（ロ）は比較例の温度分布線である。この
結果より明らかなように、本発明では、その長手方向に
均一な温度分布である。In the figure, the horizontal axis is the longitudinal direction of the heating resistor 11, the vertical axis is the temperature, (a) is the temperature distribution line of the present invention, and (b) is the temperature distribution of the comparative example. It is a line. As is clear from this result, in the present invention, the temperature distribution is uniform in the longitudinal direction.
【００２５】なお、本発明は上記実施例に限定されるも
のではなく、本発明の範囲を逸脱しない範囲で種々の変
更や改良等は何ら差し支えない。また、上記構成の定着
用ヒータ７の以外に、帯状発熱抵抗体を備えたものであ
れば、他の構成の定着用ヒータであっても同様な作用効
果がある。The present invention is not limited to the above embodiments, and various modifications and improvements can be made without departing from the scope of the present invention. Further, in addition to the fixing heater 7 having the above-mentioned configuration, the fixing heater having another configuration can also have the same operation and effect as long as it has a strip-shaped heating resistor.
【００２６】[0026]
【発明の効果】以上の通り、請求項１の定着用ヒータに
よれば、ＴＣＲが負である発熱抵抗体を帯状に形成して
いるので、発熱抵抗体の中央部付近は、その両端部と比
べて比抵抗が小さくなるので、その発熱度合いを下げ、
発熱抵抗体の両端部との温度差を顕著に小さくでき、こ
れにより、発熱抵抗体の長手方向に沿って加熱ムラが生
じなく、均一な温度分布となった。その結果、未定着ト
ナー像を有効かつ均一に定着できるので、記録紙上のト
ナー像を画像に忠実に再現できるとともに、記録紙が汚
染されず、また画像に滲みが生じなくなった。As described above, according to the fixing heater of the first aspect, since the heating resistor having a negative TCR is formed in the shape of a strip, the central portion of the heating resistor is at both ends thereof. Since the specific resistance is smaller than that, lower the degree of heat generation,
The temperature difference between the two ends of the heating resistor can be remarkably reduced, so that heating unevenness does not occur along the longitudinal direction of the heating resistor and a uniform temperature distribution is obtained. As a result, the unfixed toner image can be effectively and uniformly fixed, so that the toner image on the recording paper can be reproduced faithfully to the image, the recording paper is not contaminated, and bleeding does not occur in the image.
【図１】本発明の定着装置の基本的な構成を示す横断面
による概略説明図である。FIG. 1 is a schematic explanatory view in cross section showing a basic configuration of a fixing device of the present invention.
【図２】実施例の定着装置における定着用ヒータの平面
図である。FIG. 2 is a plan view of a fixing heater in the fixing device of the embodiment.
【図３】図２に示す切断面線Ｘ−Ｘによる横断面図であ
る。FIG. 3 is a cross-sectional view taken along the section line XX shown in FIG.
【図４】図２に示す切断面線Ｙ−Ｙによる縦断面図であ
る。4 is a vertical cross-sectional view taken along the section line Y-Y shown in FIG.
【図５】実施例の定着用ヒータの端部構成を示す縦断面
図である。FIG. 5 is a vertical cross-sectional view showing an end structure of a fixing heater according to an embodiment.
【図６】発熱抵抗体の温度分布を表す線図である。FIG. 6 is a diagram showing a temperature distribution of a heating resistor.
【図７】従来の定着用ヒータの横断面図である。FIG. 7 is a cross-sectional view of a conventional fixing heater.
６ 定着装置 ７ 定着用ヒータ ８ 圧接ローラ ９ 絶縁基板 １０ グレーズ層 １０ａ、１０ｂ 盛り上がり部 １１ 発熱抵抗体 １３ 保護膜 6 Fixing Device 7 Fixing Heater 8 Pressing Roller 9 Insulating Substrate 10 Glaze Layers 10a, 10b Raised Part 11 Heating Resistor 13 Protective Film
Claims (1)
体を帯状に形成し、該発熱抵抗体の両端に電極を配設し
て成る定着用ヒータ。1. A fixing heater comprising a heating resistor having a negative TCR formed in a strip shape on an insulating substrate, and electrodes being disposed at both ends of the heating resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20074794A JP3618004B2 (en) | 1994-08-25 | 1994-08-25 | Fixing heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20074794A JP3618004B2 (en) | 1994-08-25 | 1994-08-25 | Fixing heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0864350A true JPH0864350A (en) | 1996-03-08 |
| JP3618004B2 JP3618004B2 (en) | 2005-02-09 |
Family
ID=16429504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20074794A Expired - Fee Related JP3618004B2 (en) | 1994-08-25 | 1994-08-25 | Fixing heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3618004B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010276876A (en) * | 2009-05-28 | 2010-12-09 | Sharp Corp | Fixing device and image forming apparatus including fixing device |
| JP2010276729A (en) * | 2009-05-26 | 2010-12-09 | Sharp Corp | Fixing device and image forming apparatus including the fixing device |
| JP2020106699A (en) * | 2018-12-27 | 2020-07-09 | 京セラ株式会社 | Heater and fixing device |
-
1994
- 1994-08-25 JP JP20074794A patent/JP3618004B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010276729A (en) * | 2009-05-26 | 2010-12-09 | Sharp Corp | Fixing device and image forming apparatus including the fixing device |
| JP2010276876A (en) * | 2009-05-28 | 2010-12-09 | Sharp Corp | Fixing device and image forming apparatus including fixing device |
| JP2020106699A (en) * | 2018-12-27 | 2020-07-09 | 京セラ株式会社 | Heater and fixing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3618004B2 (en) | 2005-02-09 |
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